<template>
  <div class="container">
    <div class="left-board">
      <div class="logo-wrapper">
        <div class="logo">门户设计</div>
      </div>
      <el-scrollbar class="left-scrollbar">
        <!-- 左边：门户项 -->
        <div class="components-list">
          <div v-for="(item, listIndex) in leftComponents" :key="listIndex">
            <div class="components-title">
              <svg-icon icon-class="component" />
              {{ item.title }}
            </div>
              <div
                v-for="(element, index) in item.list"
                :key="index"
                class="components-item"
                @click="addComponent(element)"
              >
                <div class="components-body">
                  <svg-icon :icon-class="element.__config__.tagIcon" />
                  {{ element.__config__.label }}
                </div>
              </div>
          </div>
        </div>
      </el-scrollbar>
    </div>

    <div class="center-board">
      <div class="action-bar">
        <!-- <el-button icon="el-icon-check" type="text" @click="save">保存</el-button> -->
               <!-- <el-button icon="el-icon-video-play" type="text" @click="run">
         运行
       </el-button> -->
       <el-button icon="el-icon-video-play" type="text" @click="preview">
         预览
       </el-button>
        <el-button icon="el-icon-view" type="text" @click="showJson">
          查看json
        </el-button>
<!--        <el-button icon="el-icon-download" type="text" @click="download">-->
<!--          导出vue文件-->
<!--        </el-button>-->
<!--        <el-button class="copy-btn-main" icon="el-icon-document-copy" type="text" @click="copy">-->
<!--          复制代码-->
<!--        </el-button>-->
        <el-button class="delete-btn" icon="el-icon-delete" type="text" @click="empty">
          清空
        </el-button>
      </div>
      <!-- 中间，门户项 -->
      <el-scrollbar class="center-scrollbar">
        <!-- <div v-if="showDesign">
            将表单里的<draggable>改为<div><vue-drag-resize>
            <div v-for="(item, index) in drawingList" :key="item.renderKey" :id="item.renderKey">
            <vue-drag-resize :parentW ="1000" :parentLimiation="true" :w="item.width" :h="item.height" :y="item.top" :x="item.left" @resizestop="resize"
                @dragstop="resize" @clicked="()=>{currentItemIndex=index}">
                <draggable-item :drawing-list="drawingList" :current-item="item" :index="index" :active-id="activeId"
                :form-conf="formConf" @activeItem="activeFormItem" @copyItem="drawingItemCopy"
                @deleteItem="drawingItemDelete" />
            </vue-drag-resize>
            </div>
        </div> -->
          <div class="AppCenter">
            <grid-layout
            :layout.sync="drawingList"
            :col-num="12"
            :row-height="30"
            :is-draggable="true"
            :is-resizable="true"
            :is-mirrored="false"
            :vertical-compact="true"
            :margin="[5, 5]"
            :use-css-transforms="true"  
          >
            <grid-item v-for="(item,index) in drawingList"
              :x="item.x"
              :y="item.y"
              :w="item.w"
              :h="item.h"
              :i="item.i"
              :key="item.i"
              @resized="resizedEvent"
              @moved="movedEvent"
            >
              <draggable-item :drawing-list="drawingList" :current-item="item" :index="index" :active-id="activeId"
                :form-conf="formConf" @activeItem="activeFormItem" @copyItem="drawingItemCopy"
                @deleteItem="drawingItemDelete" style="width:100%;height:100%;overflow: auto"/>
            </grid-item>  
          </grid-layout>
          </div>
          
        <div v-show="!drawingList.length" class="empty-info">
          从左侧点击选择组件进行门户设计
        </div>
      </el-scrollbar>
    </div>

    <!-- 右边：门户组件属性 -->
    <right-panel
      :active-data="activeData"
      :form-conf="formConf"
      :show-field="!!drawingList.length"
      @tag-change="tagChange"
      @fetch-data="fetchData"
      @transTab="addtabs"
      v-if="getNames"
    />

   <!-- <form-drawer
     :visible.sync="drawerVisible"
     :form-data="formData"
     size="100%"
     :generate-conf="generateConf"
   /> -->

    <!-- 显示json -->
    <json-drawer
      size="60%"
      :visible.sync="jsonDrawerVisible"
      :json-str="JSON.stringify(formData)"
      @refresh="refreshJson"
    />

   <!-- <code-type-dialog
     :visible.sync="dialogVisible"
     title="选择生成类型"
     :show-file-name="showFileName"
     @confirm="generate"
   /> -->

   <!-- 门户全屏预览 -->
   <div v-if="dialogPreviewVisible">
      <el-dialog :visible="true" fullscreen :before-close="closeDialog">
        <parser :portalConfData="drawingList" page="dialog"/>
      </el-dialog>
   </div>
<!--    <input id="copyNode" type="hidden">-->
  </div>
</template>

<script>
import draggable from 'vuedraggable'
import { debounce } from 'throttle-debounce'
import { saveAs } from 'file-saver'
import ClipboardJS from 'clipboard'
import render from '@/components/render/render'
import FormDrawer from '@/views/infra/build/FormDrawer'
import JsonDrawer from '@/views/infra/build/JsonDrawer'
import RightPanel from './RightPanel'
import {
  basicComponents, chartComponents, systemComponents, formConf
} from './config'
import {
  exportDefault, beautifierConf, isNumberStr, titleCase, deepClone, isObjectObject
} from '@/utils/index'
import {
  makeUpHtml, vueTemplate, vueScript, cssStyle
} from '@/components/generator/html'
import { makeUpJs } from '@/components/generator/js'
import { makeUpCss } from '@/components/generator/css'
import drawingDefalut from '@/components/generator/drawingDefalut'
import logo from '@/assets/logo/logo.png'
import CodeTypeDialog from '@/views/infra/build/CodeTypeDialog'
import DraggableItem from './DraggableItem'
import parser from './parser'
import {
  getDrawingList, saveDrawingList, getIdGlobal, saveIdGlobal, getFormConf
} from '@/utils/db'
import loadBeautifier from '@/utils/loadBeautifier'
import {CommonStatusEnum} from "@/utils/constants";
import {createForm, getForm, updateForm} from "@/api/bpm/form";
import {decodeFields} from "@/utils/formGenerator";
import VueGridLayout from 'vue-grid-layout';
let beautifier
const emptyActiveData = { style: {}, autosize: {} }
let oldActiveId
let tempActiveData
const drawingListInDB = getDrawingList()
const formConfInDB = getFormConf()
const idGlobal = getIdGlobal()

export default {
  name: 'formEditor',
  components: {
    draggable,
    render,
    FormDrawer,
    JsonDrawer,
    RightPanel,
    CodeTypeDialog,
    DraggableItem,
    parser,
    GridLayout: VueGridLayout.GridLayout,
    GridItem: VueGridLayout.GridItem
  },
  props: ['isEdit','getNames'],
  data() {
    return {
      logo,
      idGlobal,
      formConf,
      basicComponents,
      chartComponents,
      systemComponents,
      labelWidth: 100,
      // drawingList: drawingDefalut,
      drawingData: {}, // 生成后的门户数据
      activeId: drawingDefalut[0].__config__.formId,

      drawingList: [], // 门户项的数组
      // activeId: undefined,
      // activeData: {},

      drawerVisible: false,
      dialogPreviewVisible: false,
      formData: {},
      dialogVisible: false,
      jsonDrawerVisible: false,
      generateConf: null,
      showFileName: false,
      activeData: drawingDefalut[0], // 右边编辑器激活的门户项
      saveDrawingListDebounce: debounce(340, saveDrawingList),
      saveIdGlobalDebounce: debounce(340, saveIdGlobal),
      leftComponents: [
        {
          title: '基础组件',
          list: basicComponents
        },
        {
          title: '图表组件',
          list: chartComponents
        },
        {
          title: '系统组件',
          list: systemComponents
        }
      ],
      currentItemIndex: 0,
      showDesign:true
      
    }
  },
  watch: {
    // eslint-disable-next-line func-names
    'activeData.__config__.label': function (val, oldVal) {
      if (
        this.activeData.placeholder === undefined
        || !this.activeData.__config__.tag
        || oldActiveId !== this.activeId
      ) {
        return
      }
      this.activeData.placeholder = this.activeData.placeholder.replace(oldVal, '') + val
    },
    activeId: {
      handler(val) {
        oldActiveId = val
      },
      immediate: true
    },
    drawingList: {
      handler(val) {
        this.saveDrawingListDebounce(val)
        if (val.length === 0) this.idGlobal = 100
      },
      deep: true
    },
    idGlobal: {
      handler(val) {
        this.saveIdGlobalDebounce(val)
      },
      immediate: true
    }
  },
  mounted() {
    // 【add by awesome】不读缓存
    // if (Array.isArray(drawingListInDB) && drawingListInDB.length > 0) {
    //   this.drawingList = drawingListInDB
    // } else {
    //   this.drawingList = drawingDefalut
    // }
    // this.activeFormItem(this.drawingList[0])
    // if (formConfInDB) {
    //   this.formConf = formConfInDB
    // }
    loadBeautifier(btf => {
      beautifier = btf
    })
    const clipboard = new ClipboardJS('#copyNode', {
      text: trigger => {
        const codeStr = this.generateCode()
        this.$notify({
          title: '成功',
          message: '代码已复制到剪切板，可粘贴。',
          type: 'success'
        })
        return codeStr
      }
    })
    clipboard.on('error', e => {
      this.$message.error('代码复制失败')
    })
  },
  created() {
    // 读取门户配置
    const formId = this.$route.query && this.$route.query.formId
    if (formId) {
      getForm(formId).then(response => {
        const data = response.data
        this.form = {
          id: data.id,
          name: data.name,
          status: data.status,
          remark: data.remark
        }
        this.formConf = JSON.parse(data.conf)
        this.drawingList = decodeFields(data.fields)
        // 设置激活的门户项
        this.activeData = this.drawingList[0]
        this.activeId = this.activeData.__config__.formId
        // 设置 idGlobal，避免重复
        this.idGlobal += this.drawingList.length
      });
    }
  },
  methods: {
    //关闭全屏预览弹框
    closeDialog(){
      this.dialogPreviewVisible = false
      let pageWidth = document.getElementById('app').scrollWidth
      // let pageHeight = document.getElementById('app').scrollHeight
      let canvasWidth = document.getElementsByClassName('AppCenter')[0].scrollWidth
      // let canvasHeight = document.getElementsByClassName('AppCenter')[0].scrollHeight
      this.drawingList.forEach(comp => {
        // console.log(comp,canvasHeight,'canvasHeight')
        comp.width = comp.width/pageWidth*canvasWidth
        // comp.height = comp.height/pageHeight*canvasHeight
      })
    },
    movedEvent(i, newX, newY){
      let layvalue = this.drawingList.find(item=>{
        return item.i === i;
      });
      layvalue.x=newX
      layvalue.y=newY
    },
    resizedEvent(i, newH, newW, newHPx, newWPx){
      let layvalue = this.drawingList.find(item=>{
        return item.i === i;
      });
      let canvasWidth = document.getElementsByClassName('AppCenter')[0].scrollWidth
      // let canvasHeight = document.getElementsByClassName('AppCenter')[0].scrollHeight
      layvalue.w=newW
      layvalue.h=newH
      layvalue.height = newHPx;
      layvalue.width = newWPx;
      layvalue.parcentWidth = newWPx/canvasWidth;
      // layvalue.parcentHeight = newHPx/canvasHeight;
      this.$forceUpdate()       
    },
    //组件拖拽、缩放后，修改组件宽高、位置
    // resize(newRect) {
    //     this.drawingList[this.currentItemIndex].width = newRect.width;
    //     this.drawingList[this.currentItemIndex].height = newRect.height;
    //     this.drawingList[this.currentItemIndex].top = newRect.top;
    //     this.drawingList[this.currentItemIndex].left = newRect.left;
    //   },
    setObjectValueReduce(obj, strKeys, data) {
      const arr = strKeys.split('.')
      arr.reduce((pre, item, i) => {
        if (arr.length === i + 1) {
          pre[item] = data
        } else if (!isObjectObject(pre[item])) {
          pre[item] = {}
        }
        return pre[item]
      }, obj)
    },
    setRespData(component, resp) {
      const { dataPath, renderKey, dataConsumer } = component.__config__
      if (!dataPath || !dataConsumer) return
      const respData = dataPath.split('.').reduce((pre, item) => pre[item], resp)

      // 将请求回来的数据，赋值到指定属性。
      // 以el-tabel为例，根据Element文档，应该将数据赋值给el-tabel的data属性，所以dataConsumer的值应为'data';
      // 此时赋值代码可写成 component[dataConsumer] = respData；
      // 但为支持更深层级的赋值（如：dataConsumer的值为'options.data'）,使用setObjectValueReduce
      this.setObjectValueReduce(component, dataConsumer, respData)
      const i = this.drawingList.findIndex(item => item.__config__.renderKey === renderKey)
      if (i > -1) this.$set(this.drawingList, i, component)
    },
    fetchData(component) {
      const { dataType, method, url } = component.__config__
      if (dataType === 'dynamic' && method && url) {
        this.setLoading(component, true)
        this.$axios({
          method,
          url
        }).then(resp => {
          this.setLoading(component, false)
          this.setRespData(component, resp.data)
        })
      }
    },
    setLoading(component, val) {
      const { directives } = component
      if (Array.isArray(directives)) {
        const t = directives.find(d => d.name === 'loading')
        if (t) t.value = val
      }
    },
    //激活组件
    activeFormItem(currentItem) {
      this.activeData = currentItem
      this.activeId = currentItem.__config__.formId
    },
    onEnd(obj) {
      if (obj.from !== obj.to) {
        this.fetchData(tempActiveData)
        this.activeData = tempActiveData
        this.activeId = this.idGlobal
      }
    },
    //添加组件
    addComponent(item) {
      let clone = this.createIdAndKey(item);
      this.fetchData(clone)
      this.drawingList.push(clone)
      this.activeFormItem(clone)
    },
    //克隆组件
    cloneComponent(origin) {
      const clone = deepClone(origin)
      const config = clone.__config__
      config.span = this.formConf.span // 生成代码时，会根据span做精简判断
      this.createIdAndKey(clone)
      clone.placeholder !== undefined && (clone.placeholder += config.label)
      tempActiveData = clone
      return tempActiveData
    },
    createIdAndKey(item) {
      let y = this.drawingList.length;
      let nowid = Date.now();
      let clonea = deepClone(item);
      // const config = item.__config__
      // config.formId = ++this.idGlobal
      clonea.__config__.renderKey = nowid; // 改变renderKey后可以实现强制更新组件
      if (clonea.__config__.layout === 'colFormItem') {
        clonea.__vModel__ = `field${nowid}`
      } else if (config.layout === 'rowFormItem') {
        clonea.__config__.componentName = clonea.__config__.componentName || `row${nowid}`
        !Array.isArray(clonea.__config__.children) && (clonea.__config__.children = [])
        delete clonea.__config__.label // rowFormItem无需配置label属性
      }
      if (Array.isArray(clonea.__config__.children)) {
        clonea.__config__.children = clonea.__config__.children.map(childItem => this.createIdAndKey(childItem))
      }
      let canvasWidth = document.getElementsByClassName('AppCenter')[0].scrollWidth
      // let canvasHeight = document.getElementsByClassName('AppCenter')[0].scrollHeight
      clonea.i = nowid;
      clonea.y = y;
      clonea.x = 0;
      if(clonea.__config__.componentType ==="chartComponents"){    
        // clonea.w = 6;
        clonea.w =clonea.width ? Math.ceil(clonea.width/82): 6;
        clonea.h =9;
      }else{
        clonea.w =clonea.width ? Math.ceil(clonea.width/82): 5;
        clonea.h =clonea.height ? Math.ceil(clonea.height/30): 5;
      }  
      clonea.parcentWidth = clonea.width / canvasWidth;
      // clonea.parcentHeight = clonea.width / canvasHeight;
      // console.log(canvasWidth,canvasHeight,clonea,'//////////////////////////////////')
      return clonea
    },
    // 获得门户数据
    AssembleFormData() {
      this.formData = {
        fields: deepClone(this.drawingList),
        ...this.formConf
      }
    },
    //显示门户预览
    preview() {
        this.$store.commit('CHANGE_FLAG', true)
        this.dialogPreviewVisible = true
    },
    save() {
      // this.AssembleFormData()
      // console.log(this.formData)
      this.$refs["form"].validate(valid => {
        if (!valid) {
          return;
        }
        const form = {
          conf: JSON.stringify(this.formConf), // 门户配置
          fields: this.encodeFields(), // 门户项的数组
          ...this.form // 门户名等
        }
        // 修改的提交
        if (this.form.id != null) {
          updateForm(form).then(response => {
            this.$modal.msgSuccess("修改成功");
            this.close()
          });
          return;
        }
        // 添加的提交
        createForm(form).then(response => {
          this.$modal.msgSuccess("新增成功");
          this.close()
        });
      });
    },
    /** 关闭按钮 */
    close() {
      this.$tab.closeOpenPage({ path: "/bpm/manager/form" });
    },
    encodeFields() {
      const fields = []
      this.drawingList.forEach(item => {
        fields.push(JSON.stringify(item))
      })
      return fields
    },
    generate(data) {
      const func = this[`exec${titleCase(this.operationType)}`]
      this.generateConf = data
      func && func(data)
    },
    execRun(data) {
      this.AssembleFormData()
      this.drawerVisible = true
    },
    execDownload(data) {
      const codeStr = this.generateCode()
      const blob = new Blob([codeStr], { type: 'text/plain;charset=utf-8' })
      saveAs(blob, data.fileName)
    },
    execCopy(data) {
      document.getElementById('copyNode').click()
    },
    //请空组件
    empty() {
      this.$confirm('确定要清空所有组件吗？', '提示', { type: 'warning' }).then(
        () => {
          this.drawingList = []
          this.idGlobal = 100
        }
      )
    },
    //复制组件
    drawingItemCopy(item, list) {
      let clone = deepClone(item)
      clone = this.createIdAndKey(clone)
      list.push(clone)
      this.activeFormItem(clone)
    },
    //删除组件
    drawingItemDelete(index, list) {
      list.splice(index, 1)
      this.showDesign = false
      this.$nextTick(() => {
        this.showDesign = true //重新渲染中间门户项，避免删除一个组件后影响其他组件的位置和宽高
        const len = this.drawingList.length
        if (len) {
          this.activeFormItem(this.drawingList[len - 1])
        }
      })
    },
    generateCode() {
      const { type } = this.generateConf
      this.AssembleFormData()
      const script = vueScript(makeUpJs(this.formData, type))
      const html = vueTemplate(makeUpHtml(this.formData, type))
      const css = cssStyle(makeUpCss(this.formData))
      return beautifier.html(html + script + css, beautifierConf.html)
    },
    //显示json
    showJson() {
      this.AssembleFormData()
      this.jsonDrawerVisible = true
    },
    download() {
      this.dialogVisible = true
      this.showFileName = true
      this.operationType = 'download'
    },
    run() {
      this.dialogVisible = true
      this.showFileName = false
      this.operationType = 'run'
    },
    copy() {
      this.dialogVisible = true
      this.showFileName = false
      this.operationType = 'copy'
    },
    tagChange(newTag) {
      newTag = this.cloneComponent(newTag)
      const config = newTag.__config__
      newTag.__vModel__ = this.activeData.__vModel__
      config.formId = this.activeId
      config.span = this.activeData.__config__.span
      this.activeData.__config__.tag = config.tag
      this.activeData.__config__.tagIcon = config.tagIcon
      this.activeData.__config__.document = config.document
      if (typeof this.activeData.__config__.defaultValue === typeof config.defaultValue) {
        config.defaultValue = this.activeData.__config__.defaultValue
      }
      Object.keys(newTag).forEach(key => {
        if (this.activeData[key] !== undefined) {
          newTag[key] = this.activeData[key]
        }
      })
      this.activeData = newTag
      this.updateDrawingList(newTag, this.drawingList)
    },
    updateDrawingList(newTag, list) {
      const index = list.findIndex(item => item.__config__.formId === this.activeId)
      if (index > -1) {
        list.splice(index, 1, newTag)
      } else {
        list.forEach(item => {
          if (Array.isArray(item.__config__.children)) this.updateDrawingList(newTag, item.__config__.children)
        })
      }
    },
    refreshJson(data) {
      this.drawingList = deepClone(data.fields)
      delete data.fields
      this.formConf = data
    },
    /* 选项卡相关 */
    addtabs(tab) {
      const tabsComponent = layoutComponents.find(
        (item) => item.__config__.tag === "el-tabs"
      );
      const clone = this.cloneComponent(tabsComponent);
      let currentIndex;
      this.drawingList.forEach((item, index) => {
        if (item.__config__.tag === clone.__config__.tag) {
          currentIndex = index;
        }
        return currentIndex;
      });
      this.drawingItemDelete(currentIndex, this.drawingList);
      this.addComponent(tab);
    },
  }
}
</script>

<style lang='scss'>
@import '@/styles/home';
  .vdr {
    border: 0px;
    .active:before {
        content: '';
        width: 100%;
        height: 100%;
        top: 0;
        left: 0;
        outline: 0px;
      }
  }
  .AppCenter {
    overflow-y: auto;
    overflow-x: hidden;
    // border: 1px solid red;
    width: 100%;
    height: 100%;
    position: absolute;
  }
  .drawing-item {
    overflow:hidden !important;
  }
</style>
